Class 8 Exam > Class 8 Questions > What happens to an electromagnet's polarity w...
Start Learning for Free
What happens to an electromagnet's polarity when the direction of the current is reversed?
- a)It becomes weaker
- b)It becomes stronger
- c)The polarity reverses
- d)The polarity remains the same
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
What happens to an electromagnet's polarity when the direction of the ...
Reversing the direction of the current flowing through an electromagnet reverses its polarity. This characteristic is essential for applications like electric motors and relays.
Free Test
FREE
| Start Free Test |
Community Answer
What happens to an electromagnet's polarity when the direction of the ...
Understanding Electromagnet Polarity
When the direction of current flowing through an electromagnet is reversed, a significant change occurs in its magnetic properties.
Electromagnet Basics
- An electromagnet consists of a coil of wire through which an electric current flows.
- This current creates a magnetic field around the wire, giving the electromagnet its magnetic properties.
Polarity of an Electromagnet
- The term "polarity" refers to the direction of the magnetic field produced by the electromagnet.
- An electromagnet has a north pole and a south pole, determined by the direction of the current.
Effect of Reversing Current
- When the direction of the current is reversed, the orientation of the magnetic field also reverses, thus changing the north and south poles.
- This is because the magnetic field direction is directly related to the flow of electric current.
Conclusion
- Hence, the correct answer to the question is option 'C': The polarity reverses.
- Understanding this principle is crucial for applications in electric motors, generators, and various electronic devices, where control over magnetic polarity is essential.
Recognizing these fundamental concepts helps in grasping the workings of electromagnets and their practical applications in technology.
When the direction of current flowing through an electromagnet is reversed, a significant change occurs in its magnetic properties.
Electromagnet Basics
- An electromagnet consists of a coil of wire through which an electric current flows.
- This current creates a magnetic field around the wire, giving the electromagnet its magnetic properties.
Polarity of an Electromagnet
- The term "polarity" refers to the direction of the magnetic field produced by the electromagnet.
- An electromagnet has a north pole and a south pole, determined by the direction of the current.
Effect of Reversing Current
- When the direction of the current is reversed, the orientation of the magnetic field also reverses, thus changing the north and south poles.
- This is because the magnetic field direction is directly related to the flow of electric current.
Conclusion
- Hence, the correct answer to the question is option 'C': The polarity reverses.
- Understanding this principle is crucial for applications in electric motors, generators, and various electronic devices, where control over magnetic polarity is essential.
Recognizing these fundamental concepts helps in grasping the workings of electromagnets and their practical applications in technology.
|
Explore Courses for Class 8 exam
|
|
Top Courses for Class 8View all
Question Description
What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer? for Class 8 2025 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 8 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer?.
What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer? for Class 8 2025 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 8 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer?.
Solutions for What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 8.
Download more important topics, notes, lectures and mock test series for Class 8 Exam by signing up for free.
Here you can find the meaning of What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice What happens to an electromagnet's polarity when the direction of the current is reversed?a) It becomes weakerb) It becomes strongerc) The polarity reversesd) The polarity remains the sameCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 8 tests.
|
|
Explore Courses for Class 8 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup